Question

Por favor alguém me ajuda a resolver

2(x+1) +5(x-1)=7

Answer 1

2.(x+1)+5.(x-1)=7
2x+2+5x-5=7
2x+5x=7+5-2
7x=7+3
7x=10
x=10/7

Answer 2

2.(x + 1) + 5.(x - 1) = 7
2x + 2 + 5x - 5 = 7
2x + 5x + 2 - 5 = 7
7x - 3 = 7
7x = 7 + 3
7x = 10
x = 10/7